When one is working out a problem ... life becomes duality. One's ego transacts the ordinary routine of things, as if the mind had an upper and lower story and the regular performance of the day's duties moved and motivated on the upper floor, while down below the all-absorbing problem toils silently, forcefully, toward its solution.

When one is working out a problem ... life becomes duality. One's ego transacts the ordinary routine of things, as if the mind had an upper and lower story and the regular performance of the day's duties moved and motivated on the upper floor, while down below the all-absorbing problem toils silently, forcefully, toward its solution.